We’ve always been interested in fluidic logic and, based on [soiboi’s] videos, he is too. His latest shows how to use silicone and a vacuum to build a multiplexed dot matrix display.

Plenty of our childhoods had at least one math teacher who made the (ultimately erroneous) claim that we needed to learn to do math because we wouldn’t always have a calculator in our ...

Welcome to the ME 270 course website for the Spring 2026 term. The material on this site is a complement to the lecture book for the course. And, all material here is accessible without the need to ...

Happiness is an electrifying and elusive state. Philosophers, theologians, psychologists, and even economists have long sought to define it. And since the 1990s, a whole branch of psychology—positive ...

Learn the benefits and risks of options and how to start trading options Lucas Downey is the co-founder of MoneyFlows, and an Investopedia Academy instructor. Samantha (Sam) Silberstein, CFP®, CSLP®, ...

Key attitudes and strategic frameworks for intelligent and successful investors Marguerita is a Certified Financial Planner (CFP), Chartered Retirement Planning Counselor (CRPC), Retirement Income ...

Trading for beginners can be exciting – and overwhelming. That’s why we’ve outlined everything you need to know for your trading journey, including how to trade stocks and forex trading for beginners.

For investors focused on maximizing returns, cost matters. Whether you’re trading a few times a year or rebalancing a diversified portfolio regularly, high fees can quietly eat away at your gains. The ...